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课件网) Lesson 2 Brain Power HUMAN BIOLOGY Unit 9 By the end of this period, you will be able to: listen and talk about the human brain and brain power; listen to formal and informal talks; learn and practise using expressions that ask for and give advice. 扫清听力障碍 absolutely gray and white matter billion electrical impulse flexible comfortable zone at one’s best intake physical exercise 完全地 灰质和白质 十亿 电子脉冲 灵活的 体育锻炼 舒适区 处于最佳状态 摄入 Match the words with their definitions. atom nerve billion cell organ A. one thousand million B. a part of the body that has a particular purpose, eg. the heart C. the smallest piece of something that can exist alone D. a tiny part of the body that helps carry messages to and from the brain E. a unit of living matter Listen for understanding. Activity 1 Listen to the lecture and check your answers. ( )1. The brain consists of only white matter. ( )2. The brain weighs just over a kilo. ( )3. The brain contains about one billion cells. ( )4. The brain uses 10% of the body’s energy. ( )5. The brain sends messages in the same way as a computer works. ( )6. There are more possible connections in your brain than there are atoms in the universe. T F F T F T Activity 2 Listen again and try to fill in the chart. What matter does it consist of How much does it weigh How much body’s energy does it use How many cells does it contain How are messages sent The brain cells make up _____ ____, which are connected by _____ _____. The brain sends messages using them. What have we learnt about the brain in the last ten years There are different areas in the brain, which are _____ _____ _____ _____. We now know which parts of the brain ___ _____ ___ different parts of our _____ ___ _____from them. The brain also has different areas for different kinds of _____ . You have one area for your _____ _____ and another area for __ _____ _____ that you learn when you are older. What matter does it consist of How much does it weigh How much body’s energy does it use How many cells does it contain grey and white matter over 1 kilo 20% over 100 billion cells How are messages sent The brain cells make up _____ ____, which are connected by _____ _____. The brain sends messages using them. What have we learnt about the brain in the last ten years There are different areas in the brain, which are _____ _____ _____ _____. We now know which parts of the brain ___ _____ ___ different parts of our _____ ___ _____from them. The brain also has different areas for different kinds of _____ . You have one area for your _____ _____ and another area for __ _____ _____ that you learn when you are older. a foreign language nerve cells electrical impulses responsible for different functions thinking first language are related to body and feelings Activity 3 Complete the summary with the words from the lecture. The brain consists of 1_____ matter. It weighs 2_____ _____. It us ... ...
